addenv	env = $target^.env	tmp = $env.${pid}	echo $var^' = '^$"value >> $target^.env	uniq $env > $tmp	mv $tmp $env	adddep $target $target^.env rmenv	env = $target^.env	tmp = $env.${pid}	grep -v '^'^$var^' ' $env > $tmp	mv $tmp $env